Current-supply means for weft stop motions



Oct. 13, 1953 P. DEPOILLY 2,655,184

CURRENT-SUPPLY MEANS FOR WEFT STOP MOTIONS Filed Feb. 19, 1952 2Sheets-Sheet l jnvenfor f @37 0 Depaf/A fl/farwey P. DEPOILLY 2,655,184CURRENT-SUPPLY MEANS FOR WEFT STOP MOTIONS Filed Feb. 19, 1952 Oct. 13,1953 2 Sheets-Sheet 2 Patented Oct. 13, 1953 CURRENT-SUPPLY MEANS FORWEFT STOP MOTIONS Paul Depoilly, Flixeco Socit ditc: Saint Paris, Franceurt, France, assignor to Frercs, Socit Anonyme,

Application February 19, 1952, Serial No. 272,460 In France February 21,1951 4 Claims. 1

Weaving looms and notably circular looms are frequently equipped withelectric weft stop motions which are mounted on the shuttles and whichpartake of their circular movement. The shuttles are enclosed betweenthe two thread sheets and the reed, and current is supplied on the onehand through the reed and on the other hand through one of the threadsheets with the interposition of machine parts between the fixed machineelements of the loom and the shuttle, which considerably strains thethreads and results in an early wear of the parts in contact therewith.

The present invention has for its object means to supply current toelectric weft stop motions carried by weaving loom shuttles and notablyby circular loom shuttles in which the inconveniences inherent to priordevices are avoided; with this end in view, the current is led in andout through the reed, of which a number of elements are connected to theone pole of the current source while the others are connected to theother pole.

Two embodiments of the present invention are shown by way of example inthe appended drawmg.

Figure 1 is a diagrammatical plan view of the first embodiment.

Figure 2 is a cross sectional view taken on line II-II in Fig. 1.

Figure 3 is a fractional front view of the reed.

Figure 4 is a plan view of a second embodiment.

Figure 5 is a sectional view taken on line V-V in Fig. 4.

The circular weaving loom illustrated in Figs. 1 and 4 comprises ashuttle I which carries a weft stop motion 2 which partakes of itscircular motion. Current is led to and out of said motion through leads3 and 4 ending in brushes 5, 6 which slidably engage the dents of thereed.

In the embodiment illustrated in Figs. 1 to 3, the dents, instead ofbeing continuous between their conductive supports 1 and 8, are radiallyoffset; the two resilient contacts 5, 6 are vertically offset in such amanner that the one will only engage the dents 9 while the other willonly engage the dents ID; the conductive support 1 which carries thedents 9 is connected to the one pole while the other conductive support8 which carries the dents I0 is connected to the opposite pole.

In the embodiment illustrated in Figs. 4 and 5 the dents H occupy thewhole space comprised between their insulating supports l2 and I3; allthe teeth belonging to sectors a are connected to the one pole whilethose which belong to sector I) are connected to the opposite pole andthose which belong to the narrow sectors 0 separating the sectors a andb are insulated.

The size of said sectors is such that whenever the brush 5 is inengagement with any one of the dents in either sector a or sector 17 thebrush 6 will be in engagement with some dent in sectors 17 or arespectively.

It will be appreciated that in this arrangement the current is led tothe weft stop motion without resorting to any mechanism that may damagethe threads in the warp or the weft, and this, with a few movablecontacts as possible and consequently with maximum safety.

It is to be understood that the two aforedescribed embodiments of theinvention are only given for the purpose of exemplification and by nomeans of limitation and that many modifications may be made thereinwithout thereby departing from the scope of the invention.

What I claim is:

1. In. a circular loom including a shuttle, a reed slidably engaged bysaid shuttle and an electric weft stop motion carried by said shuttle, anumber of the reed dents being connected to the one pole of the weftstop motion electric source and another number of said reed dents beingconnected to the opposite pole of said source, a pair of resilientbrushes partaking of the rotation of the shuttle, connected each to oneof the terminals of the weft stop motion and arranged to remain infrictional engagement respectively with the dents connected to the oneand the other poles of the electric source.

2. An arrangement according to claim 1 wherein each dent is divided intotwo sections offset relative to one another, the one of which isconnected to the one pole and the other to the other pole, the pair ofresilient brushes being likewise offset relative to one another andco-operating each with those dent portions which are connected to oneand the same pole of the electric source.

3. An arrangement according to claim 1 where in each dent is dividedinto two sections which are offset radially relative to one another andlocated at unequal levels, those dents which belong to the one kindbeing conductively connected to the one pole of the electric source andthose which belong to the other kind being connected to the other pole,the pair of resilient brushes being likewise offset radially relative toone another and located at unequal levels in order that they mayco-operate each with the dents of the related kind.

4. An arrangement according to claim 1 where- 1 in the dents arevgrouped in equal sectors of a circle each of which is connected to oneof the poles of the electric source.

PAUL DEPOILLY.

References (L'ited in the file of this patent UNITED STATES PATENTSNumber Name Date 2,247,307 Pelce June 24, 1941 2,433,479 Pelce Dec. 30,1947 2,535,369: Pelce Dec; 26, 1950

